The Drug Enforcement Administration (DEA) has joined the investigation into the death of actress Hayden Panettiere, according to sources familiar with the matter. Panettiere, 36, died on Sunday at a residence in Greenville, South Carolina.
The Greenville County Coroner's Office stated that the actress was found in cardiac arrest prior to her death. Further details regarding the circumstances of her passing have not yet been released.
This is a developing story, and updates will be provided as more information becomes available.